I am learning promise chaining and I stumbled upon a doubt. Consider the below promise chain - const myPromise = new Promise((resolve, reject) => { setTimeout(() => { resolve("foo"); }, 10000); }); myPromise .then(handleFulfilledA, handleRejectedA) // first then .then(handleFulfilledB, handleRejectedB)…
Consider the following assignments: const promise1 = (async () => { await someAsyncFunction(); })(); const promise2 = new Promise(async resolve => { await someAsyncFunction(); resolve(); }); Is there any meaningful difference between these two Promises (other than verbosity)?
I'm just inherited a new codebase and this pattern in javascript seems to do nothing: /** * Update Data Model * @param {Object} model * @param {String} field * @param {Mixed} value */ function updateDataModel(model, field, value) { return new…
I recently encountered this question on Stack Overflow, asking about how the then method really works in JavaScript. The responder, Trincot, made the following comment: The host will check which job queues have entries, giving precedence to job queues with…
So, I was recently introduced to the concept of promises and I was told for chaining purpose, we use 'then', which is actually invoked when the attached promise object is fulfilled. And, to do some work after this object is…